... , pu coating, TelfonDensity: 160T, 170T, 180T, 190T, 210TFrameShaftMaterial: steel, wood, aluminum, Titanium-aluminum, fiberglassFinish: black color, zin-plated, nickel plated, chromium plated, golden ... fold, 4 fold, 5 foldDifferent dia. & length are availableRibsMaterial: steel, (Titanium-)aluminum, fiberglassFinish: black color, zin-plated, nickel-plated, chromium plated, golden ...